Figure 31-1: Viruses of Halobacteria: Transmission electron micrographs of viruses from extreme halophiles, all negative stain, bars 100 nm except 70 nm in Panel C. Panel A: HPsi1, Panel B: HPsi2 Panel C: PsiCh1, Panel D: PsiH, Panel E: PsiN, Panel F: His1. Panels A and B reprinted from Nutall and Dyall-Smith (68) with permission. Panel C courtesy of A. Witte. Panel D reprinted from Zillig et al. (127) with permission. Panel E reprinted from Vogelsang-Wenke and Oesterhelt (116) with permission. Panel F reprinted from Bath and Dyall-Smith (9) with permission.